Improved curtain or shade fixture



UNITED STATES PATENT OFFICE.

WILLIAM CAMPBELL, OF NEW YORK, N. Y.

IMPROVED CURTAIN OR SHADE FIXTURE.

Specification forming part of Letters Patent No. 44,602, dated Octoberl1, 1864.

' ot' this specification, in which- Figure l is a front view of myinvention,

partly in section; Fig. a transverse section ofthe same, taken in theline rx, Fig. l.

Similar letters ot' reference indicate `like parts.

This invention relates to a new and useful improvement in that class ot'iixtures for wind0w-shades in which the roller on which the shade iswound is provided with a spiral spring to render the roller self-actingin windin g up the shade. v

The invention consists in a new and iluproved stop mechanism for holdingthe roller or preventing` it from winding up the shade, so that thelatter may be held or retained at any desired height.

A represents a shade-roller, which is provided internally with a spiralspring, B, and is hung in the usual manner 'in bracket et a', saidspring` having a tendency to rotate the roller A in the directionindicated by arrow l, and thus wind up the shade C. At one end oftheroller A there is a pulley, D, formed on or firmly attached to theroller, and-.which may be smaller in diameter than the latter. Thispulley may be of wood or metal and may, if desired, be covered withindia-rubber b, or other suitable elastic material. The bracket a', inwhich this end ofthe roller is fitted, is provided with an uprightplate, c, at its rear, and between this upright plate c and the pulley Dthere is a vertical wedge, E, the beveled or inclined surface of whichis opposite to or faces the pulley D, as shown clearlyin Fig. 2. Thiswedge E is provided with a cylindrical or other suitably-shaped shank,d, which passes through a horizontal projection, e, at the bottom ofthebracket a', and has a spiral spring,

.f, upon it, said spring being between the projection 6 anda shoulder,g, formed by the low( r thick end of the wedge E, and having atendencyto keep the wcdgi pressed upward, so as io bind between the pulleyD andthe plate c, and by its pressure against said pulley prevent the rollerbeing turned by the spring, and consequently the shade from being woundup. This will be fully understood by referring to Fig. 2, in which itwill be seen that the rotating ot' the pulley Din the Vdirection givenit by the spring B would have a tendency to cause the wedge E to pressor bind rmly against it, and it will also be seen that if the pulley Dbe turned in the reverse direction it will force down and loosen thewedge E, and consequently that the shade may be lowered at any time bysimply pulling it down.

The lower end ofthe shank d of the wedge E has a cord, F, attached toit, by which the wedge E may be drawn down to release the pulley 1) andadmit of the spring B turning the roller A and winding up the shade C.

Thus by this simple means a very eicieut and economical stop for springshade-rollers is obtained-one that is noiseless in its operation and notliable to get out of repair or become deranged by use. 1

l claim as new and desire to secure by Letters Patent- The wedge E andpulley D, in combination with the springroller A, all arrangedsubstantially as and for the purpose herein set forth.

WM. CAMPBELL.

Witnesses:

JAMES l?. HALL, C. L. TOPLIFF.

